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L'eaers Paraninfo. 76,929, ma Apre 21, 1868.

IMPROVEMENT IN GONDENSERS.

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T0 ALL WHOM IT MAY CONCERN:

Be it known that'L'WILLIAM A. LIQBTHALL, of thecity, county, and Stateof New York, have invented certain new and useful ImprovementsinSurface-Condensers for Steam-Engines; and I do hereby declare that thefollowing is a full and exact description 'of the same, reference beinghad to the accompanying drawings, and to the letters .of referencemarked thereon, in which- Figure 1 isa vertical" cross-section.

Figure 2 is a horizontal cross-section.

Figure' is a vertical longitudinal section.

JIn the ordinary method of constructing surface-condensers forsteam-engines, the said condensers being intended and used forcondensing the exhausted steam from the engine, and creating a vacuum inthe samethe steam is generally exhausted into the condenser by a singleopen-ing, directly upon the tubes with which the said condenser isilledf-the operation of this exbauststeam upon the tubes is found, inpractice, to cut rthe material of the tubes away, which not onlyinjuresthe condenser, but also injuresthe bolersot the engine, by the materialthus lcut away being taken away by the feed-pumps to the boilers, and bythe action of the differing 'metals--copper and iron-producing agalvanic action that'is proved, in practice, tobe very destructive tothe boilers, at the same time that it proves destructive to the actionof the condenser, by the cutting away of the material of the tubes inthe same, as before stated.

There has been an arrangement used to prevent this. action on the tubes,by inter-posing' a plate4 between the exhaust-pipe from the engine andthe upper seriesiof tubes in the condenser, but thisarrangement has beenfound, by trial, to be of'no practical benefit, the same destructiveaction ensuing from its/'use as is named above- The object and purposeof my invention are to overcome and remedy this defect, and thedestructive action above named, by providing, in a'surface-condenser, anopen space betweenthe sections of tubes contained therein, whether thesaid space is made horizontally or vertically, so that the exhaustedysteam shall pass into such open space, (withoutbeing brought intocontact with the mass of the tubes,) and shall ltheube distributedamongst and around and bythe tubes contained in the condenser to becondensed, to produce the required vacuum in the condenser, and fromthat to the engine, to `which it is connected, and, also, by providingan exhaust-pipe, attached-to the condenser by a series of nozzles, (twoor more,) in which the steam from the engine is exhausted on its passageto the condenser,by,means of which the exhausted steam is so distributedthrough- Y out the length of the condenser that the destructive actiondue to a singlefexhaust-opening into the condenser is avoided. l

A, in the accompanying drawings, is the condenser-case.' B is the seriesof tubes, through which the cooling-water, to produce condensation,passes, and around, amongst, and by which the steam exhausted from theengine to be condensedpasses. C is the inlet for the cooling-water,through which-thecooling-water passes into the endof the ease A, andfrom thence passes through 'thelower section of the tubes B, andreturnsthrough the upper section of the tubes, to pass outward from thecondenser through the outlet D.

As this condenser is mainly intended for vessels using steam-power forpropulsion at sea, or in rivers or localities where the water is impure,the supply ot' coolingwater to pass through the tubes, as above named,can be supplied in such localities and positions by any means now knownor used. i

As seen by the drawings, a space is left between the lower and uppersections of the tubes into which space the exhaust-steam from the enginefirst passes, before being distributed amongst, around, and bythe said-tubes'to be condensed, and, by this means, the destructive actionbefore named is entirely avoided. This same result ensues whether thevacant space is left between the series of tubes in their height, wherethe space is made horizontally, or if it is left between the series oftubes in their width, where the space is made vertically;

By thus placing the tubes in the surface-condenser, and by attachingthereto the eihaust-pipel from the engine, with its series of openings,as shown and described, the destructive action due to thel ordinarymethod of constructing andarranging surface-condensers is entirelyavoided.

E is the exhaust-pipe attached tothe condenser,- with the openings F FF, through which the steam exhausted` from the eng'ne enters into thecondenser, to. effect the pulpese s'et forth.

i What I- claim as my invention,and desire to secure 'by Letters Patent,iss-- Arranging the exhaust-pipe from the engine, with its series ofopenings, :1s shown, in relation to the vacant space between the seriesof tubes, as and for the purpose herein. set forth. l

WM. A. LIGHTI-IALL.

Witnesses:

FRANCIS S. Low, W. WHR.

